The Large Bore-HD cat-back exhaust system is constructed out of mandrel bent, 2.5" 409 stainless steel and includes welded-on hangers and OE style band clamps for a simple and leak-free bolt-on installation. This system is a 2-piece design that requires cutting to install. Completing this exhaust system, a dual 3" double walled polished stainless steel tip provides an aggressive yet elegant look.